VERTEBRATE.ai

On a recent evening in San Francisco, a Waymo robotaxi did something no human driver would attempt on purpose: it rolled calmly through a firework exploding in the street, neither swerving nor slamming the brakes, and kept going. The moment, captured and circulated as a kind of accidental stress test, arrived the same week Waymo confirmed its driverless fleet has grown to nearly 4,000 vehicles operating across multiple American cities. For a company that has spent years accumulating both admirers and skeptics, the timing was almost too tidy — a literal trial by fire, passed without so much as a swerve.

The rider's-eye view of these Jaguar I-PACEs, as described in a first-person account of a San Francisco trip, is notable mostly for what doesn't happen. No phone glances at red lights. No creeping through crosswalks. No horn taps of impatience. The car simply proceeds, at a pace some riders find almost bureaucratic in its caution, through a city that has never made caution look easy. That mundanity is, in a sense, the entire pitch: a driving experience with the drama surgically removed.

Four thousand vehicles is still a rounding error against the roughly 280 million cars registered in the United States, but it represents a meaningful inflection point for autonomous vehicles as a commercial proposition rather than a research curiosity. Waymo, a unit of Alphabet, has moved from cautious pilot programs in a handful of neighborhoods to a fleet size that starts to resemble an actual transportation network — one now doing paid rides at scale in cities including San Francisco, Phoenix, and beyond. Scaling a fleet of that size means scaling the edge cases too: the double-parked delivery trucks, the jaywalkers, the errant fireworks, all the unscripted texture of American streets that no amount of simulation fully anticipates.

That the firework moment reads as reassuring rather than alarming says something about where public sentiment on robotaxis currently sits — cautiously thawing, after years of headlines about stalled vehicles blocking ambulances and fatal crashes involving other companies' self-driving programs. Waymo has positioned its unflappability, its refusal to be startled or distracted, as the actual selling point over human drivers, who remain the leading cause of the roughly 40,000 annual U.S. traffic deaths that safety regulators regularly cite.

Whether that translates into durable public trust, and eventually into profits for Alphabet, remains the open question hovering over every one of those 4,000 cars. But the direction of travel is clear enough: driverless rides are quietly becoming ordinary in the cities where Waymo operates, less a novelty than a mode of getting to dinner. A car that can shrug off an exploding firework is, in the end, less a marvel of engineering than a small, useful data point in the much larger argument Waymo is making — that boring, in a driver, is exactly what you want.